App dissapears from Task Manager when running a QProcess

[INeedADollar]

It may not be the reason, but you are calling QProcess::start() incorrectly. The preferred way is to specify the first argument as a QString containing the name of the program to be executed (your youtube-dl.exe), and the second argument a QStringList where each item in the list is one of the individual command line arguments. In your case, this should be:

QString program = "D:\\YTDownloader\\youtube-dl.exe";
QStringList args;
args << "-e" << "--no-playlist" << "https://www.youtube.com/watch?v=6V-wwfuxZxw";
process->start( program, args );

QString program = "D:\\YTDownloader\\youtube-dl.exe";
QStringList args;
args << "-e" << "--no-playlist" << "https://www.youtube.com/watch?v=6V-wwfuxZxw";
process->start( program, args );

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Also, Task Manager has a default update rate. (View->Update speed) If your process starts and ends in less time than the update interval, it may not show up.

Thank you very much!